iPhone 5S – Performance and battery life Review | Trusted Reviews
Why does my iPhone 5s battery suddenly drop from 43% to 20% and then 10% suddenly? Is this battery to be replaced or is there something other malfunctioning? - Quora
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iPhone 5S Battery Life Issue
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iPhone 5s - Battery Life Test Playing Youtube (2023) - YouTube
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Discussion] Battery life on 10.3.1 (iPhone 5s) is massively improved over all iOS 10 versions (including 10.3.2 beta). : r/iOSBeta
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